Sony DSR-V10 DVCAM player/recorder flown on the Orbiter Atlantis for the last mission of the Space Shuttle Program, STS-135. Affectionately known as a 'video walkman,' the device measures approximately 5.75″ x 6.5″ x 2.25″, and bears a NASA label on the top: "DSR-V10, Digital Video Recorder, P/N SEZ16103294-301, S/N 1075." It is also labeled "STS-135" and "MON 2," and bears several affixed Velcro swatches. The green labels were applied to these monitors to specify which flight they were assigned to, where they were located, and which monitor feed was being used. A battery mount, marked "SEZ16103268-703, S/N 1087," is attached to the rear. The DSR-V10 formed part of the Space Shuttle's standard Closed Circuit Television (CCTV) system, allowing real-time viewing and recording of video from onboard cameras and from the EVA helmet camera system. Includes its bag with deaccession label.